AstraZeneca Plc will likely get results of the company’s U.S. Covid-19 vaccine trial in late January 2021 and could potentially file for an emergency authorization, the chief adviser for the U.S. government’s Operation Warp Speed program said.

Johnson & Johnson launched a new late-stage trial in Britain to test a two-dose regimen of the company’s experimental Covid-19 vaccine among thousands of volunteers, as the U.S. drugmaker’s clinical studies expand by geography and type.

A roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines includes the use of miniature lungs and colons to help test Covid-19 treatments.

A new study suggests that some patients could see a decline in cognition that is equivalent to the brain aging approximately 10 years.

AstraZeneca’s Covid-19 vaccine accurately follows the genetic instructions programmed into AZD1222 by the developers to successfully provoke a strong immune response, according to a detailed analysis carried out by independent UK scientists.

More than half of Covid-19 patients discharged from hospitals still experienced symptoms of breathlessness, fatigue, anxiety and depression for two to three months after their initial infection, according to the findings of a small UK study.

The U.S. government awarded $486 million to AstraZeneca Plc to develop and secure supplies of up to 100,000 doses of Covid-19 antibody treatment, a similar class of drug that was used in treating President Donald Trump.

Pfizer Inc. said participants were showing mild-to-moderate side effects when given either the company’s experimental coronavirus vaccine or a placebo in an ongoing late-stage study.

Pfizer Inc and BioNTech SE proposed to the U.S Food and Drug Administration to expand their Phase 3 pivotal Covid-19 vaccine trial to about 44,000 participants while increasing the diversity of the study population.

U.S. drugmaker Merck & Co. Inc. began recruiting participants to the company’s early-stage Covid-19 vaccine study, according to the government database clinicaltrials.gov.